| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You under the Apache License, Version 2.0 |
| * (the "License"); you may not use this file except in compliance with |
| * the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| package org.apache.karaf.features.extension; |
| |
| import java.util.Arrays; |
| |
| import org.osgi.framework.BundleActivator; |
| import org.osgi.framework.BundleContext; |
| import org.osgi.framework.BundleEvent; |
| import org.osgi.framework.ServiceRegistration; |
| import org.osgi.framework.SynchronousBundleListener; |
| import org.osgi.framework.hooks.resolver.ResolverHookFactory; |
| import org.osgi.framework.wiring.FrameworkWiring; |
| |
| public class Activator implements BundleActivator, SynchronousBundleListener { |
| private static final String WIRING_PATH = "wiring"; |
| private StoredWiringResolver resolver; |
| private BundleContext context; |
| |
| @Override |
| public void start(BundleContext context) throws Exception { |
| this.context = context; |
| resolver = new StoredWiringResolver(context.getDataFile(WIRING_PATH).toPath()); |
| context.addBundleListener(this); |
| } |
| |
| @Override |
| public void stop(BundleContext context) throws Exception { |
| context.removeBundleListener(this); |
| } |
| |
| @Override |
| public void bundleChanged(BundleEvent event) { |
| if (event.getBundle().getBundleId() == 0 && event.getType() == BundleEvent.STARTED) { |
| resolveAll(); |
| } else if (event.getType() == BundleEvent.RESOLVED) { |
| resolver.update(event.getBundle()); |
| } else if (event.getType() == BundleEvent.UNRESOLVED) { |
| resolver.delete(event.getBundle()); |
| } |
| } |
| |
| private void resolveAll() { |
| ServiceRegistration<ResolverHookFactory> registration = context.registerService(ResolverHookFactory.class, (triggers) -> resolver, null); |
| try { |
| context.getBundle().adapt(FrameworkWiring.class).resolveBundles(Arrays.asList(context.getBundles())); |
| } finally { |
| registration.unregister(); |
| } |
| } |
| } |